Double-ended wrench.



G. W. ROWELL. DOUBLE ENDED WRENCH-J APPLIOATION FILED DEO.31,1906.

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PATENTED APR. 16, 1907.

TTNTTET) STATES TENT OEETGE.

DOUBLE-ENDED WRENCH.

Specification of Letters Patent.

i'atented April 16, 1907.

Application filed December 31,1906. Serial No. 850,187.

To all whom it may concern.-

Be it known that I, GEORGE W. RowELL, a citizen of the United States, and a resident of Hollis, in the county of Greer and Territory of Oklahoma, have invented a new and Improved Double-Ended Wrench, of which. the following is a specification.

My invention relates to wrenches that have pairs of jaws at both ends, one of which pairs is provided with teeth, so that pipe and other round objects can be securely held, and the other pair provided with smooth faces, so that the article engaged will not be damaged.

My invention consists in a main bar having a aw at each end and having one side notched, the notches being in sets and opposite; in a slidable jaw portion, and in means for locking said jaw portion in any desirable position on the main bar.

In the accompanying drawings, which illustrate my invention, Figure 1 is a view of the wrench with the jaw portion practically central. Fig. 2 is a cross-section on the line A A of Fig. 3; and Fig. 3 is a crosssection on the line B B of Fig. 2, showing the locking mechanism.

Similar reference characters refer to like parts throughout the several views.

The wrench here illustrated is simple and easily constructed. It consists of the main bar 1, having two sets of teeth 2 and 3, pointing toward the ends of the bar. Jaws 4 and 5 extend from the side or edge of the bar 1 opposite the teeth, the jaw 4 being provided with teeth, as shown. The locking-bar 6 is provided with teeth at both ends, which teeth are adapted to engage those on the main bar 1. Links 7 are pivoted in the locking-bar 6 and to the double jaw 8. This double jaw 8 has one end provided with teeth to match those on the jaw 4 on the main bar. A shell 9 of sheet metal is secured to the locking-bar 6 and extends down over a portion of the links 7.

The operation of the wrench is as follows: The locking-bar is first swung up until the links 7 are vertical or at right angles to the main bar 1. The shell 9, the locking-bar 6, and the double jaw 8 are then moved along together until the desired opening between the jaw 4 and the double jaw or between the jaw 5 and the double jaw is secured. The

shell 9 and the locking-bar are then moved forward toward the end of the main bar, which carries the jaw to be employed, the double jaw being held against movement. In the drawings the wrench is set for using the left end, the jaws of which are toothed for round objects.

It will be noticed that any pressure which tends to force the jaw 4 and the double jaw 8 apart will tend to draw the teeth on the lock ing-bar 6 more securely into the spaces between the teeth on the left end of the main bar 1. The size and number of teeth may be varied according to the fineness of adjustment necessary, the larger teeth being the stronger, as a rule. The wrench may be varied in many details to suit the character of the work to which it is to be put without departing from the spirit of my invention.

Having now explained my improvements, what I claim as my invention, and desire to secure by Letters Patent, is

1. In a wrench, the combination of a bar having teeth along one edge, said teeth being in sets and oppositely inclined from the mid dle, jaws on the ends of the bar and extending from the edge opposite the teeth, a locking-bar having'two sets of teeth adapted to match the teeth on the main bar, a double jaw adapted to be positioned between the jaws on the main bar, links securing the locking-bar to the double jaw, and a shell or guard extending over the locking-bar and the adjacent ends of the links.

2. In a wrench, the combination of a flat main bar having oppositely-inclined set of teeth along one edge and jaws extending from the opposite edge, a locking-bar having teeth adapted to engage the teeth on the main bar, a double jaw, and links to connect the locking-bar and double jaw one of the jaws on the main bar and one end of the double jaw being provided with teeth to adapt the wrench to hold. round objects.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GEORGE W. ROWELL.

Witnesses:

J. D. PENINeToN. J. F. REED. 

